Plz help is texture a physical or chemical properties
2 answers:
You might be interested in
Based on the trend from the graph, the reaction time would have been 32.5 seconds.
<h3>What is the trend in the graph?</h3>A trend is a general pattern which an observation follows based on previous observations and occurrences.
The reaction time is the time it take for a chemical reaction to occur.
Reaction time is also a measure of reaction rate. The shorter the reaction time, the faster the reaction rate and vice versa.
Based on the trend from the graph, the reaction time would have been 32.5 seconds.
In conclusion, reaction time is a measure of reaction rate.
Learn more about reaction time at: brainly.com/question/24795637
#SPJ1
Answer : The amount of heat released in the combustion is, 209.5 kJ
Explanation :
First we have to calculate the moles of Al and .
Now we have to calculate the limiting and excess reagent.
The balanced chemical reaction will be:
From the balanced reaction we conclude that
As, 3 mole of react with 4 mole of
So, 0.188 moles of react with
moles of
From this we conclude that, is an excess reagent because the given moles are greater than the required moles and
is a limiting reagent and it limits the formation of product.
Now we have to calculate the moles of
From the reaction, we conclude that
As, 3 mole of react to give 2 mole of
So, 0.188 moles of react to give
moles of
Now we have to calculate the amount of heat released in the combustion.
As, 1 mole of releases amount of heat = 1676 kJ
So, 0.125 mole of releases amount of heat =
Thus, the amount of heat released in the combustion is, 209.5 kJ